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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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In Reply to: Hallelujah! I'll never have to listen to a CD again! posted by JimF on October 20, 2005 at 08:27:07:
You know, one of the things Eximius 24/96 "remastering"
manages to extract out of just about every standard
Redbook CD I've tried it on is that elusive "acoustic
bubble" -- that shimmering region of "otherspace"
that hangs in the air enveloping the speakers and the
listener. It's almost like a substance -- like a
quivering volume of aspic or jello.It's such a low-level phenomenon that digital playback
couldn't do it at all for a long, long time, and
precious few LP playback systems ever could, either
(I never had a high-enough-resolution analog playback
system to pull that off).The first time I **unmistakably** heard this phenomenon
was with an Assemblage DAC-2 I bought in '97, equipped
with HDCD via the PMD-100 digital filter, and 20-bit
Burr-Brown PCM1702 DACs. With the (frustratingly hard-to-find,
for many years) HDCD-encoded CDs, I heard, for the first
time from CD, that elusive acoustic bubble. Unfortunately,
with HDCD, it was also an **unstable** effect -- quivering
indeed like jello, probably due to the dynamic-range
compression/expansion going on.Come to think, I heard the same sort of thing from
dbx-encoded LPs in the late 70's.Anyway, Eximius reprocessing manages to make every CD
into, effectively, an "HDCD-encoded" CD, at least in terms
of its subjective effect on the low-level acoustic
ambience of the soundspace.Jim F.
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Follow Ups
- The acoustic bubble. HDCD - JimF 10/24/0510:26:11 10/24/05 (0)
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